e3959a0390
This release fixes the following Security Vulnerabilities:
- CVE-2022-42898 PAC parse integer overflows
- CVE-2022-3437 Overflows and non-constant time leaks in DES{,3} and
arcfour
- CVE-2022-41916 Fix Unicode normalization read of 1 bytes past end of
array
- CVE-2021-44758 NULL dereference DoS in SPNEGO acceptors
- CVE-2021-3671 A null pointer de-reference when handling missing sname
in TGS-REQ
- CVE-2022-44640 Heimdal KDC: invalid free in ASN.1 codec
Note that CVE-2022-44640 is a severe vulnerability, possibly a 10.0
on the Common Vulnerability Scoring System (CVSS) v3, as we believe
it should be possible to get an RCE on a KDC, which means that
credentials can be compromised that can be used to impersonate
anyone in a realm or forest of realms.
Heimdal's ASN.1 compiler generates code that allows specially
crafted DER encodings of CHOICEs to invoke the wrong free function
on the decoded structure upon decode error. This is known to impact
the Heimdal KDC, leading to an invalid free() of an address partly
or wholly under the control of the attacker, in turn leading to a
potential remote code execution (RCE) vulnerability.
This error affects the DER codec for all extensible CHOICE types
used in Heimdal, though not all cases will be exploitable. We have
not completed a thorough analysis of all the Heimdal components
affected, thus the Kerberos client, the X.509 library, and other
parts, may be affected as well.
This bug has been in Heimdal's ASN.1 compiler since 2005, but it may
only affect Heimdal 1.6 and up. It was first reported by Douglas
Bagnall, though it had been found independently by the Heimdal
maintainers via fuzzing a few weeks earlier.
While no zero-day exploit is known, such an exploit will likely be
available soon after public disclosure.
- CVE-2019-14870: Validate client attributes in protocol-transition
- CVE-2019-14870: Apply forwardable policy in protocol-transition
- CVE-2019-14870: Always lookup impersonate client in DB
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
6 lines
316 B
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6 lines
316 B
Plaintext
# From https://github.com/heimdal/heimdal/releases
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sha1 a33fdc957f84ab13f39f164b04fe1deeaab3179e heimdal-7.7.1.tar.gz
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sha256 117cb1ede7848db24cf27311c46f7f735a99f9c836c22e80aec92b91efe56644 heimdal-7.7.1.tar.gz
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# Locally computed
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sha256 0c4b07bf5b98f7a1d01f8e60722d6c6747ef052c2aa6d2043daf690d4e1b0a7f LICENSE
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